Compaq Infortrend Manuale Utente

Redundant Controller

10-33

Forcing Controller Failover for Testing

This function is reserved for de-bugging.

Testing the failover functionality can be performed using the following
methods.

Pulling out one of the controllers to simulate controller
failure

Pull out either the primary or the secondary controller
An error message will display immediately with sounded alarm. The
existing controller takes over the workload within a second. Clear all
errors by pressing the ESC key. You may now install the controller once
removed after all activities have been taken over by the existing
controller. It may take a while for the controllers to finish re-
initialization and assuming their load.

Failover by "Forcing controller failure"

Select "View and Edit Peripheral Devices," "Set Peripheral Device Entry,"
and "Redundant Controller Primary/Secondary."

Select "Force Primary/ Secondary Controller Failure." You may now
pull out the controller you had just disabled. I/Os should be continued
by the existing controller. Continue the aforementioned procedure to
complete the test.

WARNING!

•

This function should only be performed for testing the redundant controller

functionality before any critical data is committed to drives. Although the controller

is designed to be hot-swappable, unpredictable failures may occur during the process,

i.e. improper handling of PCB boards while replacing the controller.